August kothe



' UNITED STATES PATENT Orrrceo AUGUST KOTHE, OF HANOVER, PRUSSIA,GERMANY.

REMEDY AGAINST DRY-ROT AND DAMPNESS IN WALLS SPECIFICATION forming partof Letters Patent No. 307,055, dated October 21, 1884.

Application filed July 23, 1854v (N0 specimens) T0 aZZwhom it mayconcern.-

Be it known that 1, AUGUST KOTHE, a subject of the King of Prussia, anda resident of the city of Hanover,Kingdom of Prussia,have invented anImproved Remedy Against Dry- Rot and Dampness in Valls, of which thefollowing is a specification.

The present invention relates to the manufacture of a composition by theuse of which the dampness of walls or masonry may be got rid of, evenwhen the dampness arises from saltpeter being contained in the stone orother material of which the wall or masonry to be treated consists.

The composition or preparation is made by intimately mixing together thefollowing ingredients in the several given proportions, or thereabout,taken by volume or measurethat is to say: one of heated sand; twoaudone-half of purified beech-wood ash; one-half slaked lime,with a littlepulverized lime; onefourth green vitriol one-fourth linseed-oilone-eighth sirup of sugar, and one-eighth chlo ride of calcium. Thecomposition so obtained possesses the quality of attracting the moist-25 ure that may be present in its immedia e cinity. Thus if a suitablequantity of this composition be applied to the damp part of a wall,preferably by placing it within a hole or recess made in the wall forthe purpose, in from four to six weeks the whole of the dampness will beeradicated, and the wall maintained permanently dry, as has beendemonstrated.

I claim- 5 The mixture of sand, wood-ash, lime, green vitriol,linseed-oil, sirup, and chloride of cal cium.

In witness that I claim this as my own I have hereunder set myhand inthe presence of two +0 subscribing witnesses.

AUGUST KOTHE.

Vitnesses:

B. ROI, PH. v. HERTLING.

